Type of articulated and dismountable lifting jack



Sept. 1, I931. l. H. FOTHERINGHAM Y I 1,821,627

TYPE OF ARTICULATED ANDDISMOUNTABLE LIFTING.JACK

Filed Feb. 14, 1929 awue/ntoz NETED IG-NACIO H. FOTHEBINGHAM, OF RIO OUARIO, ARGENTINA TYPE OF ART'ICULATED AND DISMOUNTABLE LETTING JACK Application filed February 14, 1929.

The present invention refers to a new type of articulated and disinountable lifting ack, with the use of which notable advantages are secured, inasmch as I obtain an appliance of low cost eas to assemble and dismount and I a a 7 therefore very convenient as regards transport and conservation, it being especially adaptable for these reasons for lifting motor cars and similar vehicles, as the reduced space which it occupies, allows it to be carried in any position.

In order that my application may be more comprehensible, l have illustratedsame with various figures, wherein:

Fig. 1 is a front view of the apparatus, Fig. 2 is a plan view.

Construction The construction comprises essentially anarti'culated triangle, the base beingformed by a pipe or tube" (a), 1n which 18 lnserted the stem (2)) for the purpose of its greater or lesser lengthening, fixed by the key (0) which is placed in the holes possessedby the pipe (a) and the stem (6). The pipe (a) has in its end a double ear or lug (d) in which another side of the-htriangle mentioned moves articulately, and which is constituted by a tube or pipe (6) and the stem which is inserted in same.

The other side of the triangle is also formed by a pipe (g) and its stem (h), fixed in the same manner as the base, that is to say, by its corresponding key and holes, and it is articulated at the vertex, at which is pivoted the support The pipe 9 isprovided at its lower end with a forked member n attached thereto by means of a pin carrying between the prongs of the forked member a wheel j adapted to run on stem 7) and tube a; forming the base of the instrument, and stem 1) is equipped at its outer end with a. perforated upright part is through the perforation of which passes one end of a screw Z, the other end of which is forked and has articulated thereto a lever on, the outer end of which is looped to present a handle.

The base (a), (b) carries the supports (0).

The material with which the distinct parts Serial No. 339,807.

may be of one sole piece, or more if same be necessary, without this representing a departure from the scope of the lnvention.

Working Once the triangle has been fixed in the position shown in Fig. l, in the right hand end of screw (Z) is inserted the bi-articulated handlefm), and the screw (Z) is placed in movement. his screw (Z), pushes the fork (n), which in turn pushes the pertaining side, whose wheel slides upon the base (6), (a) of the triangle, modifying the figure of this and raising the vertex (also articulated), thus raising the objectresting on the vertex mentioned, as shown by dotted lines in Fig. 1.

The greater or lesser length of the sides is easily obtained by means of the insertion indicated, and by the keys and holes already explained.

The load or object having been raised, and it being desired to lower same, it is sufficient to reverse the movement of the handle (m) in, order to effect the descent, smoothly and securely, avoiding violent descents through failure of parts or carelessness, these inconveniences being completely eliminated with the present appliance.

Having thus described my invention what I claim as new and desire to secure by Let ters Patent is:

A lifting jack comprising an extensible base, an extensible arm pivoted to said base and extending upwardly at an inclination of the second named arm and extending t0- wards and adapted to engage the free end of the screw whereby upon rotation of the screw by the handle the member will move the roller over the bar to thereby elevate the arms and the support.

In testimony whereef I afiix my signature. IGNACIO H. FOTHERINGHAM. 

